diff options
| -rw-r--r-- | drivers/char/tpm/tpm_i2c_atmel.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c index 4f229656a8e2..9fd73049821f 100644 --- a/drivers/char/tpm/tpm_i2c_atmel.c +++ b/drivers/char/tpm/tpm_i2c_atmel.c @@ -31,9 +31,11 @@ struct priv_data { size_t len; - /* This is the amount we read on the first try. 25 was chosen to fit a + /* + * This is the amount we read on the first try. 25 was chosen to fit a * fair number of read responses in the buffer so a 2nd retry can be - * avoided in small message cases. */ + * avoided in small message cases. + */ u8 buffer[sizeof(struct tpm_header) + 25]; }; @@ -58,7 +60,9 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, if (status < 0) return status; - /* The upper layer does not support incomplete sends. */ + /* + * The upper layer does not support incomplete sends. + */ if (status != len) return -E2BIG; @@ -76,9 +80,11 @@ static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count) if (priv->len == 0) return -EIO; - /* Get the message size from the message header, if we didn't get the + /* + * Get the message size from the message header, if we didn't get the * whole message in read_status then we need to re-read the - * message. */ + * message. + */ expected_len = be32_to_cpu(hdr->length); if (expected_len > count) return -ENOMEM; @@ -111,15 +117,19 @@ static u8 i2c_atmel_read_status(struct tpm_chip *chip) struct i2c_client *client = to_i2c_client(chip->dev.parent); int rc; - /* The TPM fails the I2C read until it is ready, so we do the entire + /* + * The TPM fails the I2C read until it is ready, so we do the entire * transfer here and buffer it locally. This way the common code can - * properly handle the timeouts. */ + * properly handle the timeouts. + */ priv->len = 0; memset(priv->buffer, 0, sizeof(priv->buffer)); - /* Once the TPM has completed the command the command remains readable - * until another command is issued. */ + /* + * Once the TPM has completed the command the command remains readable + * until another command is issued. + */ rc = i2c_master_recv(client, priv->buffer, sizeof(priv->buffer)); dev_dbg(&chip->dev, "%s: sts=%d", __func__, rc); @@ -172,9 +182,11 @@ static int i2c_atmel_probe(struct i2c_client *client) dev_set_drvdata(&chip->dev, priv); - /* There is no known way to probe for this device, and all version + /* + * There is no known way to probe for this device, and all version * information seems to be read via TPM commands. Thus we rely on the - * TPM startup process in the common code to detect the device. */ + * TPM startup process in the common code to detect the device. + */ return tpm_chip_register(chip); } |